FR728644A - Device allowing the transformation of recordings of sound vibrations into electrical vibrations and vice versa - Google Patents

Device allowing the transformation of recordings of sound vibrations into electrical vibrations and vice versa

Info

Publication number
FR728644A
FR728644A FR728644DA FR728644A FR 728644 A FR728644 A FR 728644A FR 728644D A FR728644D A FR 728644DA FR 728644 A FR728644 A FR 728644A
Authority
FR
France
Prior art keywords
vibrations
recordings
transformation
vice versa
device allowing
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Expired
Application number
Other languages
French (fr)
Inventor
Edgar-Pierre Tawil
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed filed Critical
Application granted granted Critical
Publication of FR728644A publication Critical patent/FR728644A/en
Expired legal-status Critical Current

Links

Classifications

    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04R—LOUDSPEAKERS, MICROPHONES, GRAMOPHONE PICK-UPS OR LIKE ACOUSTIC ELECTROMECHANICAL TRANSDUCERS; DEAF-AID SETS; PUBLIC ADDRESS SYSTEMS
    • H04R17/00—Piezoelectric transducers; Electrostrictive transducers
    • H04R17/04—Gramophone pick-ups using a stylus; Recorders using a stylus

Landscapes

  • Physics & Mathematics (AREA)
  • Engineering & Computer Science (AREA)
  • Acoustics & Sound (AREA)
  • Signal Processing (AREA)
FR728644D 1931-12-19 1931-12-19 Device allowing the transformation of recordings of sound vibrations into electrical vibrations and vice versa Expired FR728644A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
FR728644T 1931-12-19

Publications (1)

Publication Number Publication Date
FR728644A true FR728644A (en) 1932-07-08

Family

ID=9111962

Family Applications (1)

Application Number Title Priority Date Filing Date
FR728644D Expired FR728644A (en) 1931-12-19 1931-12-19 Device allowing the transformation of recordings of sound vibrations into electrical vibrations and vice versa

Country Status (1)

Country Link
FR (1) FR728644A (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2564136A (en) * 1943-03-04 1951-08-14 Hartford Nat Bank & Trust Co Corundum crystal recording or reproducing member
US2596494A (en) * 1948-06-12 1952-05-13 Brush Dev Co Ceramic electromechanical transducer

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2564136A (en) * 1943-03-04 1951-08-14 Hartford Nat Bank & Trust Co Corundum crystal recording or reproducing member
US2596494A (en) * 1948-06-12 1952-05-13 Brush Dev Co Ceramic electromechanical transducer

Similar Documents

Publication Publication Date Title
FR728644A (en) Device allowing the transformation of recordings of sound vibrations into electrical vibrations and vice versa
FR714339A (en) Device for the transformation of mechanical vibrations into electrical vibrations and vice versa
FR727263A (en) Electrodynamic device allowing to transform electrical oscillations into sound vibrations or vice versa
FR703873A (en) Apparatus allowing the permanent repetition of a phonograph record
FR716439A (en) Sound recording device
FR715456A (en) Advanced sound reproducer
DK47866C (en) Combined electric Light and Sound signal device.
FR730303A (en) Receiver and amplifier device
FR694866A (en) Device for sound and speaking cinematography
FR737115A (en) Listening device
CA277544A (en) Sound reproducing device
FR712568A (en) Sound reproducing device for studying room acoustics
FR740828A (en) Electric acoustic warning device
FR712588A (en) Device for receiving and reproducing acoustic oscillations
FR727233A (en) Amusement device
CA308585A (en) Sound recording device
CA311240A (en) Sound reproducing device
FR761679A (en) Sound reproduction device
FR697190A (en) Sound reproducing device of phonograms
DK46979C (en) Device for Underwater Signal and Sonar Devices.
FR735896A (en) Sound recording and reproducing device
BE384438A (en) Recording device
CA301304A (en) Sound reproducing device
CA297783A (en) Sound reproducing device
CA302190A (en) Sound reproducing device